Sticky Grenades
From WikiRaider
Sticky Grenades are used in Tomb Raider Underworld
They are similar to normal Grenades in Tomb Raider Legend. They stick on moving objects and blow them up, perfect on Sharks, Tigers, Spiders, Human-Sized Spider, Black Leopard, Thralls, Poachers, Nagas, Mercenaries and Bats.